发明名称 Jewellery-/fine-jewellery-crafted spectacles making
摘要 The invention relates to a novel concept of manufacturing metal spectacles which differs from the conventional manufacture (profiles or bezels welded to each other). This invention possesses 3 manufacturing techniques: 1) stamping; 2) lost-wax casting or injection under pressure; 3) cutting out of metal plate.
申请公布号 FR2622308(A1) 申请公布日期 1989.04.28
申请号 FR19870014513 申请日期 1987.10.21
申请人 MAREK RAOUL 发明人
分类号 B44C3/08;G02C5/00;G02C11/02 主分类号 B44C3/08
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